Pyrgotidae

Pronunciation

How to pronounce Pyrgotidae: //pɪərˈɡɒtɪˌdiː//

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Summary

The Pyrgotidae are a unique family of flies distinguished by their lack of ocelli and endoparasitoid lifestyle, specifically targeting scarab beetles for reproduction.

Physical Characteristics

Brown patterning on the wings; typically 'picture-winged' with bands or spots on the wings.

Identification Tips

Head pattern of Sphecomyiella is generally darker, extending to the top of the head, while Boreothrinax has a lighter pattern that only reaches the middle of the frons.

Habitat

Usually found at lights, primarily in areas where their host beetles are abundant.

Distribution

Reported in various regions, particularly in areas where adult Scarab beetles are present.

Diet

Larvae are internal parasites of adult Scarab beetles, feeding on their host.

Life Cycle

Females lay eggs on beetles' backs; larvae enter the body cavity, where they develop, ultimately killing the beetle in about two weeks.

Reproduction

The female fly inserts eggs into the abdomen of the beetle while both are in flight, typically at night.

Ecosystem Role

Endoparasitoids of adult Scarab beetles, playing a role in controlling beetle populations.

Collecting Methods

• Light traps
• Netting during nocturnal activity

Preservation Methods

• Ethanol preservation
• Drying specimens

Evolution

Pyrgotidae represent one of two families of Cyclorrhapha that lack ocelli, exhibiting unique evolutionary adaptations among tephritoids.

Similar Taxa

• Tephritidae
• Tachinidae

Misconceptions

Often mistaken for other dipterans due to similar appearance and behavior.

Tags

• Diptera
• Pyrgotidae
• Cyclorrhapha
• Endoparasitoids
• Insects